1. Zakhavaeva, N. N., Deryagin, B. V., Khomntov, A. M., and Andreev, S. V., Research in Surface Forces (edit. by Deryagin, B. V.), 2 (Consultants Bureau, New York, 1966).
2. Gohar, R., and Cameron, A., Proc. Roy. Soc., A, 291, 520 (1966).
3. Holland, L., Vacuum Deposition of Thin Films (Chapman and Hall, London, 1956).